Key is a Japanese visual novel studio which formed on July 21, 1998 as a brand under the publisher VisualArt's and is located in Kita, Osaka, Japan. Key released their debut visual novel Kanon in June 1999, which combined an elaborate storyline, an up-to-date anime-style drawing style, and a musical score which helped to set the mood for the game. Key's second game Air released in September 2000 had a similar if not more complex storyline to Kanon and a more thorough gameplay. Both Kanon and Air were originally produced as adult games, but Key broke this trend with their third title Clannad which was released in April 2004 for all ages. Key has worked in the past with Interchannel and Prototype for the consumer port releases of the brand's games. Key collaborated with P.A. Works and Aniplex to produce the anime series Angel Beats! (2010) and Charlotte (2015). The brand's ninth game Rewrite was released in June 2011, and a fan disc for the game titled Rewrite Harvest festa! was released in July 2012. The first volume in the six-part Angel Beats! episodic visual novel was released in June 2015. Key will release the kinetic novel Harmonia in 2016.